Revenue Snobs
thisisgoingtobebig.com
thisisgoingtobebig.com
I remember talking to a guy ~10 years ago who had bought a bunch of public-access (but hard to find) government databases and set up a service doing people searches. Long-lost friends, loves, etc.
At first he thought he was extortionate charging $10/search. But every time he raised the price he got significantly more business. I think he settled out at ~$80/search.
Today that very same business could very well start as a VC-funded free service, when in fact people are more than willing to pay for it.
I took this advice and it worked for me. Do things that people will pay for today. Choose something that makes money and try to scale it. The challenge and excitement is in scaling a proven business idea better than the competition. Google did not invent AdWords, but they did execute better than Overture. There will be plenty of time to be original in retirement.
Think twice about building something for someone that is either cheap or just flat out broke. It sounds like Meetup dropped a lot of users that were broke.